Nested doInSync saving QTI result and updating efficiency statement

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**RedScreen** ClusterSyncer: nested doInSync is not allowed
<dispatchinfo>
	<componentinfo>
		<compname>olatmodiqrun</compname>
		<compclass>org.olat.core.gui.components.velocity.VelocityContainer</compclass>
		<extendedinfo>page:org/olat/modules/iq/_content/qti.html</extendedinfo>
		<event>
			<class&gt;org.olat.core.gui.control.Event</class&gt;
			<command>sas</command>
			<tostring>com:sas,org.olat.core.gui.control.Event@1bc04</tostring>
		</event>
	</componentinfo>
	<controllerinfo>
		<controllername>org.olat.modules.iq.IQDisplayController</controllername>
		<controllername>org.olat.course.nodes.iq.IQRunController</controllername>
		<controllername>org.olat.course.run.RunMainController</controllername>
		<controllername>org.olat.core.commons.fullWebApp.BaseFullWebappController</controllername>
		<controllername>org.olat.core.commons.chiefcontrollers.controller.simple.SimpleBaseController</controllername>
		<controllername>org.olat.core.commons.chiefcontrollers.BaseChiefController</controllername>
	</controllerinfo>
</dispatchinfo>
>>>stack of 1.cause::org.olat.core.logging.AssertException: ClusterSyncer: nested doInSync is not allowed
-> at org.olat.commons.coordinate.cluster.ClusterSyncer$ThreadLocalClusterSyncer.incrementAndCheckNestedLevelCounter(ClusterSyncer.java:199)
   at org.olat.commons.coordinate.cluster.ClusterSyncer.doInSync(ClusterSyncer.java:88)
   at org.olat.course.CourseFactory.loadCourse(CourseFactory.java:292)
   at org.olat.course.assessment.EfficiencyStatementManager.updateUserEfficiencyStatement(EfficiencyStatementManager.java:132)
   at org.olat.course.assessment.NewCachePersistingAssessmentManager$5.execute(NewCachePersistingAssessmentManager.java:881)
   at org.olat.course.assessment.NewCachePersistingAssessmentManager$5.execute(NewCachePersistingAssessmentManager.java:866)
   at org.olat.commons.coordinate.cluster.ClusterSyncer.doInSync(ClusterSyncer.java:98)
   at org.olat.course.assessment.NewCachePersistingAssessmentManager.saveScoreEvaluation(NewCachePersistingAssessmentManager.java:866)
   at org.olat.course.nodes.IQTESTCourseNode.updateUserScoreEvaluation(IQTESTCourseNode.java:340)
   at org.olat.course.nodes.iq.IQRunController.submitAssessment(IQRunController.java:474)
   at org.olat.modules.iq.IQDisplayController.submitAssessment(IQDisplayController.java:548)
>>>stack of 2.cause::java.lang.Exception: assertionstackgenerator
-> at org.olat.core.logging.AssertException.<init>(AssertException.java:53)
   at org.olat.commons.coordinate.cluster.ClusterSyncer$ThreadLocalClusterSyncer.incrementAndCheckNestedLevelCounter(ClusterSyncer.java:199)
   at org.olat.commons.coordinate.cluster.ClusterSyncer.doInSync(ClusterSyncer.java:88)
   at org.olat.course.CourseFactory.loadCourse(CourseFactory.java:292)
   at org.olat.course.assessment.EfficiencyStatementManager.updateUserEfficiencyStatement(EfficiencyStatementManager.java:132)
   at org.olat.course.assessment.NewCachePersistingAssessmentManager$5.execute(NewCachePersistingAssessmentManager.java:881)
   at org.olat.course.assessment.NewCachePersistingAssessmentManager$5.execute(NewCachePersistingAssessmentManager.java:866)
   at org.olat.commons.coordinate.cluster.ClusterSyncer.doInSync(ClusterSyncer.java:98)
   at org.olat.course.assessment.NewCachePersistingAssessmentManager.saveScoreEvaluation(NewCachePersistingAssessmentManager.java:866)
   at org.olat.course.nodes.IQTESTCourseNode.updateUserScoreEvaluation(IQTESTCourseNode.java:340)
   at org.olat.course.nodes.iq.IQRunController.submitAssessment(IQRunController.java:474)